Hybrid ozonation–microfiltration system for the treatment of surface water using ceramic membrane

Szymańska, Katarzyna; Zouboulis, Anastasios; Zamboulis, D.

doi:10.1016/j.memsci.2014.05.056

Cited by 45 publications

(15 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In full-scale trials ozone addition was reported to reduce biopolymer retention by UF membranes by up to 23% 16 . Membrane fouling was reported to be effectively retarded by ozonation in the long-term operation of MBRs 17 , and ceramic membrane fouling could be mitigated by ozonation combined with hydrogen peroxide in the treatment of raw waters 18 19 .…”

mentioning

confidence: 99%

Prevention of PVDF ultrafiltration membrane fouling by coating MnO2 nanoparticles with ozonation

Brown

Graham

2016

Sci Rep

View full text Add to dashboard Cite

Pre-treatment is normally required to reduce or control the fouling of ultrafiltration (UF) membranes in drinking water treatment process. Current pre-treatment methods, such as coagulation, are only partially effective to prevent long-term fouling. Since biological activities are a major contributor to accumulated fouling, the application of an oxidation/disinfection step can be an effective complement to coagulation. In this study, a novel pre-treatment method has been evaluated at laboratory scale consisting of the addition of low dose ozone into the UF membrane tank after coagulation and the use of a hollow-fibre membrane coated with/without MnO2 nanoparticles over a test period of 70 days. The results showed that there was minimal fouling of the MnO2 coated membrane (0.5 kPa for 70 days), while the uncoated membrane experienced both reversible and irreversible fouling. The difference was attributed to the greatly reduced presence of bacteria and organic matter because of the catalytic decomposition of ozone to hydroxyl radicals and increase of the hydrophilicity of the membrane surface. In particular, the MnO2 coated membrane had a much thinner cake layer, with significantly less polysaccharides and proteins, and much less accumulated organic matter within the membrane pores.

show abstract

mentioning

confidence: 99%

Prevention of PVDF ultrafiltration membrane fouling by coating MnO2 nanoparticles with ozonation

Brown

Graham

2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Preozonation has also been proposed as a pretreatment to directly reduce organic fouling of membranes (Fujioka & Nghiem 2015, Barry et al 2014, Moslemi et al 2014, Szymanska et al 2014, Orta de Velásquez et al 2013, van Geluwe et al 2011). It is well known that ozone will break down organic compounds, in particular aromatic‐rich and humic‐like NOM.…”

Section: Fouling and Its Mitigationmentioning

confidence: 99%

Preozonation Effects on Organic Foulants in a Coagulation–Ultrafiltration Membrane Process

Biscardi

Duranceau

2017

Journal AWWA

View full text Add to dashboard Cite

The effect of integrating ozone ahead of coagulation, flocculation, and sedimentation (CFS) as pretreatment to ultrafiltration (UF) membranes was investigated at the bench scale for treatment of a surface water containing organic foulants. Ozone was applied before a CFS–UF process and compared with a CFS–UF condition without ozone as the control. While CFS alone reduced turbidity by 27%, CFS increased turbidity by 61% while applying ozone. When integrated with CFS and UF, however, ozone reduced filtrate true color by 40%, ultraviolet absorbance (UVA) at 254 nm by 10%, and specific UVA by 30%, relative to the control, indicating that while ozone had impaired turbidity removal during CFS pretreatment, it had improved removal of aromatic‐rich organics. Fluorescent excitation–emission matrixes confirmed that humic acid‐like and fulvic acid‐like substances known to cause irreversible fouling were retained on the control membrane but were absent on the membrane when ozone was integrated with CFS pretreatment.

show abstract

“…(iii) color removal: color of water originating from the nominal organic matter (NOM) is yellow or light brown; it is caused by humic acids and other substances; when chlorine is used for the color removal chlorinated by-products are produced from the reaction of chlorine with NOM [31];…”

Section: Journal Of Chemistrymentioning

confidence: 99%

Novel Water Treatment Processes Based on Hybrid Membrane-Ozonation Systems: A Novel Ceramic Membrane Contactor for Bubbleless Ozonation of Emerging Micropollutants

Stylianou

Szymańska

Katsoyiannis

et al. 2015

Journal of Chemistry

View full text Add to dashboard Cite

The aim of this study is the presentation of novel water treatment systems based on ozonation combined with ceramic membranes for the treatment of refractory organic compounds found in natural water sources such as groundwater. This includes, firstly, a short review of possible membrane based hybrid processes for water treatment from various sources. Several practical and theoretical aspects for the application of hybrid membrane-ozonation systems are discussed, along with theoretical background regarding the transformation of target organic pollutants by ozone. Next, a novel ceramic membrane contactor, bringing into contact the gas phase (ozone) and water phase without the creation of bubbles (bubbleless ozonation), is presented. Experimental data showing the membrane contactor efficiency for oxidation of atrazine, endosulfan, and methyl tert-butyl ether (MTBE) are shown and discussed. Almost complete endosulfan degradation was achieved with the use of the ceramic contactor, whereas atrazine degradation higher than 50% could not be achieved even after 60 min of reaction time. Single ozonation of water containing MTBE could not result in a significant MTBE degradation. MTBE mineralization by O3/H2O2combination increased at higher pH values and O3/H2O2molar ratio of 0.2 reaching a maximum of around 65%.

show abstract

Hybrid ozonation–microfiltration system for the treatment of surface water using ceramic membrane

Cited by 45 publications

References 25 publications

Prevention of PVDF ultrafiltration membrane fouling by coating MnO2 nanoparticles with ozonation

Prevention of PVDF ultrafiltration membrane fouling by coating MnO2 nanoparticles with ozonation

Preozonation Effects on Organic Foulants in a Coagulation–Ultrafiltration Membrane Process

Novel Water Treatment Processes Based on Hybrid Membrane-Ozonation Systems: A Novel Ceramic Membrane Contactor for Bubbleless Ozonation of Emerging Micropollutants

Contact Info

Product

Resources

About